Our 7" would be equally at home in a high definition home audio / theater or on your boat. As all the Reference Line are a cut above, this will play down to 35 Hz and cleanly to 20 kHz. The sensitivity is 92 dB so you can play very loudly with little power. Having a 1.5" voice coil, it will handle 80W continuous and 300W peaks. It has a cast aluminum frame with a special two part coating to guarantee years of trouble free use in all applications. For home audio applications they can be ordered without grills.